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50.8mm Dia., 5mm Thick, 2-13μm BBAR Coated, ISP Optics Zinc Selenide (ZnSe) Window | AR213-ZC-W-50-5

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Product Details

Type:
Protective Window
Model Number:
AR213-ZC-W-50-5

Physical & Mechanical Properties

Bevel:
Protective as needed
Clear Aperture (%):
85
Clear Aperture CA (mm):
43.18
Diameter (mm):
50.80 +0.00/-0.13
Thickness (mm):
5.00 ±0.13
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
120
Parallelism (arcmin):
<3
Poisson's Ratio:
0.28
Young's Modulus (GPa):
67.2

Optical Properties

Coating:
BBAR (2000-13000nm)
Coating Specification:
Ravg <3.0% @ 2 - 13μm
Rabs <6% @ 2 - 13μm
Index of Refraction nd:
2.631
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Zinc Selenide (ZnSe)
Surface Flatness (P-V):
λ/20 @ 10.6μm
Surface Quality:
60-40
Wavelength Range (nm):
2000 - 13000

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
7.57
Density (g/cm3):
5.27

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 240:

Product Family Description

  • Low Dispersion and Absorption from 0.6 – 18µm
  • High Resistance to Thermal Shock
  • Ideal for Thermal Imaging, FLIR, and Medical Systems

ISP Optics Zinc Selenide (ZnSe) Windows feature low absorption and low dispersion across a wide wavelength range from the visible to the infrared spectrum. This makes Zinc Selenide ideal for a wide array of infrared applications including thermal imaging, FLIR, and medical systems. Zinc Selenide (ZnSe) is a relatively soft material that scratches easily and it is not recommended in harsh environments because its Knoop Hardness is only 120. ISP Optics Zinc Selenide (ZnSe) Windows are particularly useful for 10.6µm CO2 laser applications, due to its low absorption. These windows are available uncoated or with Broadband Anti-Reflection (BBAR) coating options for 2 - 13µm or 8 - 12µm for increased transmission.

Note: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination.

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